Patches on top of Radu's latest.

src/core/SkOpts.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkOpts_DEFINED
 #define SkOpts_DEFINED
 
@@ skipping 26 matching lines @@
 
     typedef void (*Morph)(const SkPMColor*, SkPMColor*, int, int, int, int, int);
     extern Morph dilate_x, dilate_y, erode_x, erode_y;
 
     typedef bool (*TextureCompressor)(uint8_t* dst, const uint8_t* src,
                                       int width, int height, size_t rowBytes);
     extern TextureCompressor (*texture_compressor)(SkColorType, SkTextureCompressor::Format);
     extern bool (*fill_block_dimensions)(SkTextureCompressor::Format, int* x, int* y);
 
     extern void (*blit_mask_d32_a8)(SkPMColor*, size_t, const SkAlpha*, size_t, SkColor, int, int);
+
+    // This function is an optimized version of SkColorCubeFilter::filterSpan
+    extern void (*color_cube_filter_span)(const SkPMColor[],
+                                          int,
+                                          SkPMColor[],
+                                          const int * [2],
+                                          const SkScalar * [2],
+                                          int,
+                                          const SkColor*);
 }
 
 #endif//SkOpts_DEFINED